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Exaust system for a motorcycle, and motorcycle including same

a technology for exhaust systems and motorcycles, applied in the direction of functional valve types, machines/engines, cycle equipment, etc., can solve the problems of unsuitable motorcycle types, shown exhaust pipe structures, etc., and achieve the effect of increasing the allowable margin

Active Publication Date: 2005-10-27
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] It is an object of the present invention to provide an exhaust pipe structure which enables an increase in the allowable margin through which the rear wheel is permitted to rise, in a motorcycle equipped with left and right mufflers.

Problems solved by technology

Therefore, the exhaust pipe structure shown in Japanese Patent Laid-open No. 2003-74337 is not suitable for these types of motorcycles, since the allowable margin through which the rear wheel 21 is permitted to rise is too small.

Method used

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  • Exaust system for a motorcycle, and motorcycle including same
  • Exaust system for a motorcycle, and motorcycle including same
  • Exaust system for a motorcycle, and motorcycle including same

Examples

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Embodiment Construction

[0036] A best mode for carrying out the present invention will be described below, based on the accompanying drawings. In the description provided below, references to front, rear, left and right correspond to the normal operating orientation of the vehicle. L is a suffix indicating the left as viewed from the driver, R is a suffix indicating the right as viewed from the driver, which are affixed as required, here and hereinafter.

[0037]FIG. 1 is a side view of a motorcycle 10 according to the present invention. The motorcycle 10 is an off-road-type motorcycle. The motorcycle 10 has a structure in which a front fork 13 is steerably mounted to a head pipe 12 provided at a front portion of a main frame 11, a steering handle 15 is mounted to the upper end of the front fork 13, and a front wheel 16 is rotatably mounted to the lower ends of the front fork 13. The motorcycle 10 includes a single-cylinder engine 17 suspended from the main frame 11. The engine 17 is surrounded by a down tub...

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PUM

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Abstract

A motorcycle, having both left and right mufflers, has an exhaust structure which enables an increase in the allowable margin through which the rear wheel is permitted to rise. A main exhaust pipe extends from an engine to one side of a shock absorber disposed on the rear side of the engine. The main exhaust pipe is branched in the vicinity of the shock absorber into a first branch pipe and a second branch pipe. The first branch pipe is connected to a first muffler disposed on the same side as the main exhaust pipe, and the second branch pipe is connected to a second muffler after passing between the shock absorber and a rear wheel to the opposed side of the vehicle body. The second branch pipe does not interfere with the rising motion of the rear wheel, and a sufficient allowable margin is secured for the rear wheel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present invention claims priority under 35 USC 119 based on Japanese patent application No. 2004-130794, filed on Apr. 27, 2004. The subject matter of this priority document is incorporated by reference herein. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an improvement in an exhaust system for a motorcycle. [0004] 2. Background of the Invention [0005] A wide variety of layout configurations have been proposed for the muffler and exhaust pipe in an exhaust system of a motorcycle. An example of an exhaust system configuration is disclosed in Japanese Patent Laid-open No. 2003-74337 (FIGS. 3 and 4). [0006] FIG. 3 of Japanese Patent Laid-open No. 2003-74337 shows an exhaust pipe 18. The exhaust pipe 18 is composed of an exhaust pipe front portion 61, a right side connecting pipe 62 extending rearwards from the exhaust pipe front portion 61 and connected to a muffler 23 disposed on...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B62K25/20B60K13/04B62K19/30B62M7/00B62M7/02F01N13/04F01N13/08
CPCB62M7/02B62K19/30F01N13/04F01N13/08
Inventor KONNO, KENJI
Owner HONDA MOTOR CO LTD
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